Given the following demand data, compute a simple exponential smoothing forecast for alpha values of 0.2 and 0.5 . Use the actual value in Period 1 as your starting forecast in Period 2 . (Round all answers to two decimal places. Use these rounded answers when computing subsequent answers.) Actual demand for the past 16 periods is shown below. Prepare a trend adjusted exponential smoothing forecast using the following parameters: =4,=1,TAF=675.67, and T5=1.67. (Round all your answers to two decimal points.) Obtain estimates of quarter relatives for these data using the centered moving average method. (Round all calculations to three decimal points and standardize the final seasonal relatives so their total is four.)